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Harrizon [31]
3 years ago
7

Solve 5x + 20=75 What is x

Mathematics
1 answer:
liberstina [14]3 years ago
4 0

Answer:

x = 11

Step-by-step explanation:

this answer can be solved by simple operations

5x + 20 = 75

5x = 55 (subtracted the 20 from 75)

x = 11 (divided the 5 by 55)

hope this helps !!

- emily

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there where ninety people at a Halloween party. eighteen of costumes where ghost. what percentage of the people at the party whe
vlada-n [284]

20%

18/90=.2

.2 as a percentage is equal to 20%.

3 0
3 years ago
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20 onions cost £3.00. 25 potatoes cost £6.25. Mr Dean needs 14 onions and 16 potatoes. Calculate the total cost.
enot [183]

Answer:

The total cost of 14 onions and 16 potatoes will be £6.10

Step-by-step explanation:

Let onion be n and potato by p

20n = £3.00

1n = £3.00/20

= £0.15

25p = £6.25

1p = £6.25/25

= £0.25

The cost of 1 onion is £0.15, and 1 potato is £0.25

Then the cost of 14 onion and 16 potatoes together will given as

14n + 16p

substituting the values of n and p, we will have

14*0.15 + 16*0.25

2.1 + 4

= £6.10

5 0
4 years ago
A square has a perimeter of 16y + 12 units. What is the length of each side of the square?
almond37 [142]

Answer:

4y + 3

Step-by-step explanation:

one side length = (16y + 12)/4 = 4y + 3

4 0
3 years ago
Read 2 more answers
Calculați: a) -5+(-2)•(4-8)<br> B) -10 + (-21)•(-7)<br> d) 6-(-3)•(1-9)<br> e) 8-(-28)•(3-10)
snow_lady [41]

a)  -5+(-2) (4-8) =

(-7)(-4) = 28

b)  -10 + (-21) (-7) =

(-10) + 147 = 137

c)  6- (-3) (1-9)

9 (1-9) = -72

d)  8 - (-28) (3 - 10)

36 (-7) = -252

6 0
4 years ago
Three fair dice are rolled, one red, one green and one blue. What is the probability that the upturned faces of the three dice a
r-ruslan [8.4K]

Answer:   \dfrac{5}{9}

Step-by-step explanation:

When we throw a die , Total outcomes =6

When we throw 3 dice , Total outcomes = 6 x 6 x 6 = 216 [by fundamental counting principle]

Given : Three fair dice are rolled, one red, one green and one blue.

Favorable outcomes : When the upturned faces of the three dice are all of different numbers i.e. no repetition of numbers allowed

By Permutations , the number of favorable outcomes = ^6P_3=\dfrac{6!}{(6-3)!}=\dfrac{6!}{3!}=6\times5\times4=120

The probability that the upturned faces of the three dice are all of different numbers = \dfrac{\text{Favorable outcomes}}{\text{Total outcomes}}

=\dfrac{120}{216}=\dfrac{5}{9}

The probability that the upturned faces of the three dice are all of different numbers  is \dfrac{5}{9} .

7 0
3 years ago
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